| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 21 |
0.7%
|
| 2 | 12 years old | 146 |
4.9%
|
| 3 | 13 years old | 657 |
22.3%
|
| 4 | 14 years old | 918 |
31.1%
|
| 5 | 15 years old | 705 |
23.9%
|
| 6 | 16 years old or older | 503 |
17.1%
|
| Sysmiss | 29 |